A number of organizations were listed under the heading of "weapons of mass destruction," but their designations clearly show that they were listed for participating in Iran's ballistic missile program rather than its covert nuclear efforts. U.S. Treasury Department officials have testified that two of these organizations (bold below) will remain sanctioned after the JCPOA goes into effect. It is not clear whether the others will also remain sanctioned or not.
Shahid Hemmat Industries Group (SHIG) (ballistic missiles)
Shahid Bagheri Industrial Group
Iran Air (IRGC, support to Assad)
Parchin Chemical Industries (ballistic missiles, support to Assad)